what is the smallest part of a compound called?\n element\n atom\n mixture\n molecule

what is the smallest part of a compound called?\n element\n atom\n mixture\n molecule
Answer
Brief Explanations:
A compound is made up of two or more different - elements chemically combined. The smallest part of a compound that still has the properties of that compound is a molecule. An element is a pure substance made of only one type of atom. An atom is the smallest part of an element. A mixture is a combination of two or more substances that are not chemically combined.
Answer:
D. molecule